vendor/sulu/sulu/src/Sulu/Component/DocumentManager/Subscriber/Core/InstantiatorSubscriber.php line 89

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  1. <?php
  3. /*
  4. * This file is part of Sulu.
  5. *
  6. * (c) Sulu GmbH
  7. *
  8. * This source file is subject to the MIT license that is bundled
  9. * with this source code in the file LICENSE.
  10. */
  12. namespace Sulu\Component\DocumentManager\Subscriber\Core;
  14. use PHPCR\NodeInterface;
  15. use Sulu\Component\DocumentManager\Event\CreateEvent;
  16. use Sulu\Component\DocumentManager\Event\HydrateEvent;
  17. use Sulu\Component\DocumentManager\Events;
  18. use Sulu\Component\DocumentManager\Metadata;
  19. use Sulu\Component\DocumentManager\MetadataFactoryInterface;
  20. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  22. /**
  23. * Responsible for instantiating documents from PHPCR nodes and
  24. * setting the document in the event so that other listeners can
  25. * take further actions (such as hydrating it for example).
  26. *
  27. * NOTE: This should always be the first thing to be called
  28. */
  29. class InstantiatorSubscriber implements EventSubscriberInterface
  30. {
  31. public function __construct(private MetadataFactoryInterface $metadataFactory)
  32. {
  33. }
  35. public static function getSubscribedEvents()
  36. {
  37. return [
  38. Events::HYDRATE => ['handleHydrate', 500],
  39. Events::CREATE => ['handleCreate', 500],
  40. ];
  41. }
  43. public function handleHydrate(HydrateEvent $event)
  44. {
  45. // don't need to instantiate the document if it is already existing.
  46. if ($event->hasDocument()) {
  47. return;
  48. }
  50. $node = $event->getNode();
  52. $document = $this->getDocumentFromNode($node);
  53. $event->setDocument($document);
  54. }
  56. public function handleCreate(CreateEvent $event)
  57. {
  58. $metadata = $this->metadataFactory->getMetadataForAlias($event->getAlias());
  59. $document = $this->instantiateFromMetadata($metadata);
  60. $event->setDocument($document);
  61. }
  63. /**
  64. * Instantiate a new document. The class is determined from
  65. * the mixins present in the PHPCR node for legacy reasons.
  66. *
  67. * @return object
  68. */
  69. private function getDocumentFromNode(NodeInterface $node)
  70. {
  71. $metadata = $this->metadataFactory->getMetadataForPhpcrNode($node);
  73. return $this->instantiateFromMetadata($metadata);
  74. }
  76. /**
  77. * @return object
  78. */
  79. private function instantiateFromMetadata(Metadata $metadata)
  80. {
  81. $class = $metadata->getClass();
  83. if (!\class_exists($class)) {
  84. throw new \RuntimeException(\sprintf(
  85. 'Document class "%s" does not exist', $class
  86. ));
  87. }
  89. $document = new $class();
  91. return $document;
  92. }
  93. }